Example usage for com.google.gson JsonArray iterator

Introduction

In this page you can find the example usage for com.google.gson JsonArray iterator.

Prototype

public Iterator<JsonElement> iterator() 

Source Link

Document

Returns an iterator to navigate the elements of the array.

Usage

From source file:org.indigo.heapsterprobe.HeapsterClient.java

License:Apache License

/**
 * This method accesses each metric available for a pod, in order to
 * monitor its current status./*  ww  w.j a va2 s  . c  o  m*/
 * @param podName String with the pod identifier.
 * @return Object with all the gathered metrics.
 */
public PodMetrics getPodMetrics(String podName) {
    // Separate Pod and Namespace
    String[] podSplit = podName.split("/");
    String namespace = podSplit[0];
    String pod = podSplit[1];

    // List the metrics available for the pod
    String podUrl = baseHeapsterUrl + "/model/namespaces/" + namespace + "/pods/" + pod + "/";
    System.out.println(podUrl + "metrics/");
    WebTarget target = client.target(podUrl + "metrics/");
    Invocation.Builder invocationBuilder = target.request();
    Response response = invocationBuilder.get();
    String message = response.readEntity(String.class);
    System.out.println(message);

    // Prepare the result variables
    int txErrors = -1;
    float txErrorsRate = -1.0f;
    int rxErrors = -1;
    float rxErrorsRate = -1.0f;
    float majorPageFaults = -1.0f;
    float pageFaults = -1.0f;
    int uptime = 0;

    // Get the metrics list checking all are available      
    JsonElement jelement = new JsonParser().parse(message);
    JsonArray listArray = jelement.getAsJsonArray();
    System.out.println("Number of metrics: " + listArray.size());

    if (listArray.size() == 0) {
        return null;
    }

    HashMap<String, String> metricsList = new HashMap<String, String>();
    Iterator<JsonElement> myIter = listArray.iterator();
    while (myIter.hasNext()) {
        String currentMetric = myIter.next().getAsString();
        System.out.println("Metric: " + currentMetric);
        String metricUrl = podUrl + "metrics/" + currentMetric + "/";
        metricsList.put(currentMetric, metricUrl);
    }

    // Retrieve metrics
    // Retrieve Tx Errors
    if (metricsList.containsKey("network/tx_errors")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("network/tx_errors"));
        txErrors = measurementObject.get("value").getAsInt();
        System.out.println("Tx Err Value: " + txErrors);
    }

    // Retrieve Tx Errors Rate
    if (metricsList.containsKey("network/tx_errors_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("network/tx_errors_rate"));
        txErrorsRate = measurementObject.get("value").getAsFloat();
        System.out.println("Tx Err Rate Value: " + txErrorsRate);
    }

    // Retrieve Rx Errors
    if (metricsList.containsKey("network/rx_errors")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("network/rx_errors"));
        rxErrors = measurementObject.get("value").getAsInt();
        System.out.println("Rx Err Value: " + rxErrors);
    }

    // Retrieve Rx Errors Rate
    if (metricsList.containsKey("network/rx_errors_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("network/rx_errors_rate"));
        rxErrorsRate = measurementObject.get("value").getAsFloat();
        System.out.println("Rx Err Rate Value: " + rxErrorsRate);
    }

    // Retrieve Memory Major Fault Rate
    if (metricsList.containsKey("memory/major_page_faults_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/major_page_faults_rate"));
        majorPageFaults = measurementObject.get("value").getAsFloat();
        System.out.println("Major Page Faults Rate Value: " + majorPageFaults);
    }

    // Retrieve Memory Fault Rate
    if (metricsList.containsKey("memory/page_faults_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/page_faults_rate"));
        pageFaults = measurementObject.get("value").getAsFloat();
        System.out.println("Memory Page Faults Rate Value: " + pageFaults);
    }

    // Retrieve Uptime
    if (metricsList.containsKey("uptime")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("uptime"));
        uptime = measurementObject.get("value").getAsInt();
        System.out.println("Uptime Value: " + uptime);
    }

    // Build result
    PodMetrics podResult = new PodMetrics(pod, namespace, txErrors, txErrorsRate, rxErrors, rxErrorsRate,
            majorPageFaults, pageFaults, uptime);
    return podResult;
}

---

From source file:org.indigo.heapsterprobe.HeapsterClient.java

License:Apache License

/**
 * This method accesses each metric available for a container, in order to
 * monitor its current status./*from   www  .j a va  2 s . c  o m*/
 * @param podName String with the pod identifier.
 * @param namespace String with the namespace identifier
 * @param containerName String with the container identifier
 * @return Object with all the gathered metrics.
 */
public ContainerMetrics getContainerMetrics(String podName, String namespace, String containerName) {

    // List the metrics available for the pod
    String containerUrl = baseHeapsterUrl + "/model/namespaces/" + namespace + "/pods/" + podName
            + "/containers/" + containerName + "/";
    System.out.println(containerUrl + "metrics/");
    WebTarget target = client.target(containerUrl + "metrics/");
    Invocation.Builder invocationBuilder = target.request();
    Response response = invocationBuilder.get();
    String message = response.readEntity(String.class);
    System.out.println(message);

    // Prepare the result variables
    float cpuUsageRate = -1.0f;
    long cpuUsage = -1L;
    int majorPageFaults = -1;
    int pageFaults = -1;
    float majorPageFaultsRate = -1.0f;
    float pageFaultsRate = -1.0f;
    int memoryUsage = -1;
    int workingSet = -1;
    int uptime = 0;

    // Get the metrics list checking all are available      
    JsonElement jelement = new JsonParser().parse(message);
    JsonArray listArray = jelement.getAsJsonArray();
    System.out.println("Number of metrics: " + listArray.size());

    if (listArray.size() == 0) {
        return null;
    }

    HashMap<String, String> metricsList = new HashMap<String, String>();
    Iterator<JsonElement> myIter = listArray.iterator();
    while (myIter.hasNext()) {
        String currentMetric = myIter.next().getAsString();
        System.out.println("Metric: " + currentMetric);
        String metricUrl = containerUrl + "metrics/" + currentMetric + "/";
        metricsList.put(currentMetric, metricUrl);
    }

    // Retrieve metrics
    // Retrieve CPU Usage Rate
    if (metricsList.containsKey("cpu/usage_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("cpu/usage_rate"));
        cpuUsageRate = measurementObject.get("value").getAsFloat();
        System.out.println("CPU Usage Rate Value: " + cpuUsageRate);
    }

    // Retrieve CPU Usage
    if (metricsList.containsKey("cpu/usage")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("cpu/usage"));
        cpuUsage = measurementObject.get("value").getAsLong();
        System.out.println("CPU USage Value: " + cpuUsage);
    }

    // Retrieve Memory Major Page Faults
    if (metricsList.containsKey("memory/major_page_faults")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/major_page_faults"));
        majorPageFaults = measurementObject.get("value").getAsInt();
        System.out.println("Memory Major Page Faults Value: " + majorPageFaults);
    }

    // Retrieve Memory Page Faults
    if (metricsList.containsKey("memory/page_faults")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/page_faults"));
        pageFaults = measurementObject.get("value").getAsInt();
        System.out.println("Memory Page Faults Value: " + pageFaults);
    }

    // Retrieve Memory Major Page Faults Rate
    if (metricsList.containsKey("memory/major_page_faults_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/major_page_faults_rate"));
        majorPageFaultsRate = measurementObject.get("value").getAsFloat();
        System.out.println("Major Page Faults Rate Value: " + majorPageFaultsRate);
    }

    // Retrieve Memory Fault Rate
    if (metricsList.containsKey("memory/page_faults_rate")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/page_faults_rate"));
        pageFaultsRate = measurementObject.get("value").getAsFloat();
        System.out.println("Memory Page Faults Rate Value: " + pageFaultsRate);
    }

    // Retrieve Memory Fault Rate
    if (metricsList.containsKey("memory/usage")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/usage"));
        memoryUsage = measurementObject.get("value").getAsInt();
        System.out.println("Memory Usage Value: " + memoryUsage);
    }

    // Retrieve Working Set
    if (metricsList.containsKey("memory/working_set")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("memory/working_set"));
        workingSet = measurementObject.get("value").getAsInt();
        System.out.println("Working Set Value: " + workingSet);
    }

    // Retrieve Uptime
    if (metricsList.containsKey("uptime")) {
        JsonObject measurementObject = retrieveMetric(metricsList.get("uptime"));
        uptime = measurementObject.get("value").getAsInt();
        System.out.println("Uptime Value: " + uptime);
    }

    // Build result
    ContainerMetrics containerResult = new ContainerMetrics(containerName, cpuUsageRate, cpuUsage,
            majorPageFaults, pageFaults, majorPageFaultsRate, pageFaultsRate, memoryUsage, workingSet, uptime);
    return containerResult;
}

---

From source file:org.indigo.occiprobe.openstack.CmdbClient.java

License:Apache License

/**
 * Using the created Jersey client, it invokes the CMDB REST API in 
 * order to retrieve the full list of Cloud providers which are
 * currently available./*from   www.j  av a 2s.  co  m*/
 * @return Strings array with the identifiers of the providers found.
 */
public String[] getProvidersList() {
    // Call to CMDB API
    WebTarget target = client.target(cmdbUrl + "/provider/list");
    Invocation.Builder invocationBuilder = target.request();
    Response response = invocationBuilder.get();
    String message = response.readEntity(String.class);

    //System.out.println(message);

    // Retrieve the providers list
    JsonElement jelement = new JsonParser().parse(message);
    JsonObject parsedRes = jelement.getAsJsonObject();
    JsonArray listArray = parsedRes.getAsJsonArray("rows");

    ArrayList<String> providersList = new ArrayList<String>();
    Iterator<JsonElement> myIter = listArray.iterator();
    while (myIter.hasNext()) {
        JsonObject currentResource = myIter.next().getAsJsonObject();
        String providerId = currentResource.get("id").getAsString();
        providersList.add(providerId);
    }

    // Prepare the result
    providersList.trimToSize();
    String[] resultList = new String[providersList.size()];
    providersList.toArray(resultList);

    return resultList;
}

---

From source file:org.indigo.occiprobe.openstack.CmdbClient.java

License:Apache License

/**
 * This method access the CMDB service in order to retrieve the available 
 * data from a Cloud Provider (i.e. its location, provided services, etc.)
 * @param providerId Represents the identifier of the Cloud provider
 * @return An object with all the information retrieved
 *//* w w w  .jav  a2 s  .  c  om*/
public CloudProviderInfo getProviderData(String providerId) {
    // Call to CMDB API
    String providerUrl = cmdbUrl + "/provider/id/" + providerId + "/has_many/services?include_docs=true";
    WebTarget target = client.target(providerUrl);
    Invocation.Builder invocationBuilder = target.request();
    Response response = invocationBuilder.get();
    String message = response.readEntity(String.class);

    //System.out.println(message);

    // Retrieve the services list
    JsonElement jelement = new JsonParser().parse(message);
    JsonObject parsedRes = jelement.getAsJsonObject();
    JsonArray listArray = parsedRes.getAsJsonArray("rows");
    if (listArray.isJsonNull() || listArray.size() == 0) {
        return null;
    }

    String occiEndpoint = null;
    String keystoneEndpoint = null;
    int type = CloudProviderInfo.OPENNEBULA;
    boolean isMonitored = false;
    boolean isBeta = false;
    boolean isProduction = false;

    Iterator<JsonElement> myIter = listArray.iterator();
    while (myIter.hasNext()) {
        JsonObject currentResource = myIter.next().getAsJsonObject();
        JsonObject currentDoc = currentResource.get("doc").getAsJsonObject();
        JsonObject currentData = currentDoc.get("data").getAsJsonObject();

        String currentServiceType = currentData.get("service_type").getAsString();
        String currentType = currentData.get("type").getAsString();
        JsonElement jsonEndpoint = currentData.get("endpoint");
        String currentEndpoint = null;
        if (jsonEndpoint == null || jsonEndpoint.isJsonNull()) {
            return null;
        }
        currentEndpoint = jsonEndpoint.getAsString();

        if (currentServiceType.equalsIgnoreCase("eu.egi.cloud.vm-management.occi")) {
            occiEndpoint = currentEndpoint;
            JsonElement currentBeta = currentData.get("beta");
            JsonElement currentProduction = currentData.get("in_production");
            JsonElement currentMonitored = currentData.get("node_monitored");

            // Retrieve the rest of info from the OCCI service
            if (currentBeta != null && currentBeta.getAsString().equalsIgnoreCase("Y")) {
                isBeta = true;
            }
            if (currentMonitored != null && currentMonitored.getAsString().equalsIgnoreCase("Y")) {
                isMonitored = true;
            }
            if (currentProduction != null && currentProduction.getAsString().equalsIgnoreCase("Y")) {
                isProduction = true;
            }
        } else if (currentServiceType.equalsIgnoreCase("eu.egi.cloud.vm-management.openstack")) {
            keystoneEndpoint = currentEndpoint;
            type = CloudProviderInfo.OPENSTACK;
        }
    }

    CloudProviderInfo myProvider = new CloudProviderInfo(providerId, occiEndpoint, keystoneEndpoint, type,
            isMonitored, isBeta, isProduction);

    return myProvider;
}

---

From source file:org.jenkinsci.plugins.skytap.CreatePublishURLStep.java

License:Open Source License

private List<String> getVMIds(String confId) throws SkytapException {

    List<String> vmList = new ArrayList<String>();

    // build request
    String reqUrl = "https://cloud.skytap.com/configurations/" + confId;

    HttpGet hg = SkytapUtils.buildHttpGetRequest(reqUrl, this.authCredentials);

    // extract vm ids
    String response = SkytapUtils.executeHttpRequest(hg);

    // check response for errors
    SkytapUtils.checkResponseForErrors(response);

    // get id and name of newly created template
    JsonParser parser = new JsonParser();
    JsonElement je = parser.parse(response);
    JsonArray ja = (JsonArray) je.getAsJsonObject().get("vms");

    Iterator iter = ja.iterator();

    while (iter.hasNext()) {
        JsonElement vmElement = (JsonElement) iter.next();
        String vmElementId = vmElement.getAsJsonObject().get("id").getAsString();

        vmList.add(vmElementId);/*from  w  w  w  .j av  a  2s  .c  om*/
        JenkinsLogger.log("VM ID: " + vmElementId);
    }

    return vmList;
}

---

From source file:org.jenkinsci.plugins.skytap.SkytapUtils.java

License:Open Source License

public static String getVMIDFromName(String confId, String vname, String authCredentials)
        throws SkytapException {

    // build url to retrieve vm object by name, so we can extract the id
    JenkinsLogger.log("Building request url ...");

    StringBuilder sb = new StringBuilder("https://cloud.skytap.com/");
    sb.append("configurations/");
    sb.append(confId);/* ww  w.j a  v  a2 s.c  o m*/
    sb.append("/vms");
    String getVmIdURL = sb.toString();

    // create request
    HttpGet hg = SkytapUtils.buildHttpGetRequest(getVmIdURL, authCredentials);

    // execute request
    String hgResponse = "";

    hgResponse = SkytapUtils.executeHttpRequest(hg);

    // check for errors
    SkytapUtils.checkResponseForErrors(hgResponse);

    // find vm that matches name

    JsonParser parser = new JsonParser();
    JsonElement je = parser.parse(hgResponse);
    JsonArray vmArray = je.getAsJsonArray();

    JenkinsLogger.log("Iterating through vm array to match name: " + vname);

    Iterator iter = vmArray.iterator();

    while (iter.hasNext()) {
        JsonObject vmObject = (JsonObject) iter.next();
        JenkinsLogger.log(vmObject.toString());
        String currentName = vmObject.get("name").getAsString();
        JenkinsLogger.log("Found VM with name: " + currentName);

        if (currentName.equals(vname)) {
            JenkinsLogger.log("Name matched. Retrieving vm id.");

            String vid = vmObject.get("id").getAsString();
            JenkinsLogger.log("VM ID: " + vid);
            return vid;
        }

    }

    // if we failed to match the name throw an exception
    throw new SkytapException("No vms were found matching name: " + vname);

}

---

From source file:org.jenkinsci.plugins.skytap.SkytapUtils.java

License:Open Source License

/**
 * Utility method to extract errors, if any, from the Skytap json response,
 * and throw an exception which can be handled by the caller.
 * /*  w w w . j  av  a  2 s. c o  m*/
 * @param response
 * @throws SkytapException
 */
public static void checkResponseForErrors(String response) throws SkytapException {

    // check skytap response body for errors
    JsonParser parser = new JsonParser();
    JsonElement je = parser.parse(response);
    JsonObject jo = null;

    if (je.isJsonNull()) {
        return;
    } else if (je.isJsonArray()) {
        return;
    }

    je = parser.parse(response);
    jo = je.getAsJsonObject();

    if (!(jo.has("error") || jo.has("errors"))) {
        return;
    }

    // handle case where skytap returns an array of errors
    if (jo.has("errors")) {

        String errorString = "";

        JsonArray skytapErrors = (JsonArray) je.getAsJsonObject().get("errors");

        Iterator itr = skytapErrors.iterator();
        while (itr.hasNext()) {
            JsonElement errorElem = (JsonElement) itr.next();
            String errMsg = errorElem.toString();

            errorString += errMsg + "\n";

        }

        throw new SkytapException(errorString);

    }

    if (jo.has("error")) {

        // handle case where 'error' element is null value
        if (jo.get("error").isJsonNull()) {
            return;
        }

        // handle case where 'error' element is a boolean OR quoted string
        if (jo.get("error").isJsonPrimitive()) {

            String error = jo.get("error").getAsString();

            // handle boolean cases
            if (error.equals("false")) {
                return;
            }

            // TODO: find out where the error msg would be in this case
            if (error.equals("true")) {
                throw new SkytapException(error);
            }

            if (!error.equals("")) {
                throw new SkytapException(error);
            }
        }

    }

}

---

From source file:org.jenkinsci.plugins.skytap.SkytapUtils.java

License:Open Source License

/**
 * Makes call to skytap to retrieve the id of a named project.
 * /*from ww  w . jav  a  2  s .com*/
 * @param projName
 * @param authCredentials
 * @return projId
 */
public static String getProjectID(String projName, String authCredentials) {

    // build url
    StringBuilder sb = new StringBuilder("https://cloud.skytap.com");
    sb.append("/projects");

    // create http get
    HttpGet hg = SkytapUtils.buildHttpGetRequest(sb.toString(), authCredentials);

    // execute request
    String response;
    try {
        response = SkytapUtils.executeHttpRequest(hg);
    } catch (SkytapException e) {
        JenkinsLogger.error("Skytap Exception: " + e.getMessage());
        return "";
    }

    // response string will be a json array of all projects
    JsonParser parser = new JsonParser();
    JsonElement je = parser.parse(response);
    JsonArray ja = je.getAsJsonArray();

    Iterator itr = ja.iterator();
    while (itr.hasNext()) {
        JsonElement projElement = (JsonElement) itr.next();
        String projElementName = projElement.getAsJsonObject().get("name").getAsString();

        if (projElementName.equals(projName)) {
            String projElementId = projElement.getAsJsonObject().get("id").getAsString();
            return projElementId;
        }

    }

    JenkinsLogger.error("No project matching name \"" + projName + "\"" + " was found.");
    return "";
}

---

From source file:org.jenkinsci.plugins.skytap.SkytapUtils.java

License:Open Source License

/**
 * Executes a Skytap API call in order to get the network id of the network
 * whose name was provided by the user.//w w  w .j ava  2 s.c  om
 * 
 * @param confId
 * @param netName
 * @return
 */
public static String getNetworkIdFromName(String confId, String netName, String authCredential)
        throws SkytapException {

    // build request url to get config info
    StringBuilder sb = new StringBuilder("https://cloud.skytap.com/");
    sb.append("configurations/");
    sb.append(confId);
    String reqUrl = sb.toString();

    // create request
    HttpGet hg = SkytapUtils.buildHttpGetRequest(reqUrl, authCredential);

    // execute request
    String httpRespBody = "";
    httpRespBody = SkytapUtils.executeHttpRequest(hg);
    SkytapUtils.checkResponseForErrors(httpRespBody);

    // parse the response, first get the array of networks
    JsonParser parser = new JsonParser();
    JsonElement je = parser.parse(httpRespBody);
    JsonArray networkArray = (JsonArray) je.getAsJsonObject().get("networks");

    JenkinsLogger.log("Searching configuration's networks for network: " + netName);

    Iterator itr = networkArray.iterator();
    while (itr.hasNext()) {
        JsonElement networkElement = (JsonElement) itr.next();
        String networkElementName = networkElement.getAsJsonObject().get("name").getAsString();

        JenkinsLogger.log("Network Name: " + networkElementName);

        if (networkElementName.equals(netName)) {
            String networkElementId = networkElement.getAsJsonObject().get("id").getAsString();

            JenkinsLogger.log("Network Name Matched.");
            JenkinsLogger.log("Network ID: " + networkElementId);
            return networkElementId;
        }

    }

    throw new SkytapException("No network matching name \"" + netName + "\""
            + " is associated with configuration id " + confId + ".");
}

---

From source file:org.kurento.room.client.KurentoRoomClient.java

License:Apache License

public Map<String, List<String>> joinRoom(String roomName, String userName, Boolean dataChannels)
        throws IOException {
    JsonObject params = new JsonObject();
    params.addProperty(JOINROOM_ROOM_PARAM, roomName);
    params.addProperty(JOINROOM_USER_PARAM, userName);
    if (dataChannels != null) {
        params.addProperty(JOINROOM_DATACHANNELS_PARAM, dataChannels);
    }//w  w w . ja  va 2 s  . co  m
    JsonElement result = client.sendRequest(JOINROOM_METHOD, params);
    Map<String, List<String>> peers = new HashMap<String, List<String>>();
    JsonArray jsonPeers = JsonRoomUtils.getResponseProperty(result, "value", JsonArray.class);
    if (jsonPeers.size() > 0) {
        Iterator<JsonElement> peerIt = jsonPeers.iterator();
        while (peerIt.hasNext()) {
            JsonElement peer = peerIt.next();
            String peerId = JsonRoomUtils.getResponseProperty(peer, JOINROOM_PEERID_PARAM, String.class);
            List<String> streams = new ArrayList<String>();
            JsonArray jsonStreams = JsonRoomUtils.getResponseProperty(peer, JOINROOM_PEERSTREAMS_PARAM,
                    JsonArray.class, true);
            if (jsonStreams != null) {
                Iterator<JsonElement> streamIt = jsonStreams.iterator();
                while (streamIt.hasNext()) {
                    streams.add(JsonRoomUtils.getResponseProperty(streamIt.next(), JOINROOM_PEERSTREAMID_PARAM,
                            String.class));
                }
            }
            peers.put(peerId, streams);
        }
    }
    return peers;
}

---

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